Measuring acoustic energy density in microchannel acoustophoresis using a simple and rapid light-intensity method
2012 (English)In: Lab on a Chip, ISSN 1473-0197, E-ISSN 1473-0189, Vol. 12, no 13, 2337-2344 p.Article in journal (Refereed) Published
We present a simple and rapid method for measuring the acoustic energy density in microchannel acoustophoresis based on light-intensity measurements of a suspension of particles. The method relies on the assumption that each particle in the suspension undergoes single-particle acoustophoresis. It is validated by the single-particle tracking method, and we show by proper re-scaling that the re-scaled light intensity plotted versus re-scaled time falls on a universal curve. The method allows for analysis of moderate-resolution images in the concentration range encountered in typical experiments, and it is an attractive alternative to particle tracking and particle image velocimetry for quantifying acoustophoretic performance in microchannels.
Place, publisher, year, edition, pages
2012. Vol. 12, no 13, 2337-2344 p.
Ultrasonic Standing-Wave, Chip, Cell, Manipulation, Suspensions, Trap
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
IdentifiersURN: urn:nbn:se:kth:diva-98959DOI: 10.1039/c2lc40120gISI: 000305288600009ScopusID: 2-s2.0-84862209428OAI: oai:DiVA.org:kth-98959DiVA: diva2:540511
FunderSwedish Research Council, 2011-5230
QC 201207102012-07-102012-07-052015-05-19Bibliographically approved